The chemical, azodicarbonamide, can be found in the popular sandwich establishment's Monterrey cheddar bread, sourdough bread, 9-grain wheat bread, Italian bread and several others. However, the chemical has also been found in yoga mats, rubber-soled shoes and synthetic leather, and is also associated with asthma and other respiratory issues.
Subway recently came under heat after "Food Babe" blogger Vani Hari started an online petition asking the company to remove the chemical from its bread. Thus far, she's managed to acquire more than 60,000 signatures.
On the heels of the petition, Subway released a statement saying it would cease using the chemical as a flour bleaching ingredient for its bread, alluding that it had been in the process of doing so prior to the petition.
"We are already in the process of removing azodicarbonamide as part of our bread improvement efforts despite the fact that it is a USDA and FDA approved ingredient," the company's emailed statement read.
As of yet, there hasn't been an exact date released from Subway for when it will discontinue using azodicarbonamide. However, it's presumable that it will be fairly soon considering the unwanted attention that's on the food chain right now. Stay tuned...